Erastus wilson



(No Model.)

B. WILSON;

WINDMILL. No; 249,437. Patented Nov. 8,1881.

INVENTOR:

ATTORNEYS.

, UNITED STATES PATENT .rr'resa I 1 ERASTUS WILSON, OF NEW YORK, N. Y.

WINDMILLQ SPECIFICATION forming part of Letters Patent No. 249,437, dated November 8 1881,

. Application filedJuly22, 1881. (No model.)

To all whom it may concern:

Be it known that I, ERASTUS WILSON, of the city, county, and State of New York, have invented a new and useful Improvement in Windmills, of which the following is a full, clear, and exact description.

The objects of my improvements are to obtain facilityin erection of the mills, durability of construction, and to avoid liability of derangement.

The invention consists in certain novel features of construction in the head-castings and other portions, as hereinafter described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a perspective View of the windmill of improved construction. Fig. 2 is a vertical section through the center of the supporting-post. Fig. 3 is a plan view of themill; and Fig. 4is an elevation, partially in section, of the centerpostjn amodified form.

Similar letters of reference indicate corresponding parts.

A is the casting by which the mill is secured to the supporting-post. B is the head or main casting, formed with a box, I), for the wheelshaft. T is the wheel-hub. N is a brake-pulley cast on the wheel-hub. L is a casting hinged to head B by a pin, a, and carrying the vane-arm K. p

The casting A is formed with a capplate, a, flanged at a, which cap-plate sets upon the upper end and covers the edges of the post Q,

, thus securing solidity and protecting the post.

The head-casting B and box I), are in one piece, and the casting is provided with a hollow pivot, 0, consisting of awrought-iron tube, on which the head B is cast, so as to secure a firm connection,', without nuts or bolts to jar loose in the working of the mill, and, further,

securing equal strength at all points. The

tube 0 extends through apertures formed in the flanges a a of casting A, and the head B is thus supported and mayturn freely.

On headB is pivoted an arm, r, carrying a brake, 0, beneath the pulley N. s is a collar around the box b, sustaining the arm o v p V P is a lever pivoted on box I), and taking by one end beneath the collar 8.

dis a chain from lever Ptothe vane-stall K, to which the chain is connected, so that when the wheel is turned edgewise to the wind the vane will draw the chain, move lever P, and raise the brake 0 into contact with pulley N, thus locking the wheel.

On the inner end of the wheel-shaft is fixed a face-plate, E, provided with two holes for the crank-pin of the driver, placed at varying distances from the center, so that the stroke can be varied.

F is the driver, and G the plunger. The plunger Gr extends through theupper part of the casting B, and is formed with a slot for a guide-bolt, it, that is fixed in the head B. The

end of the bolt projects into the slot of the. plunger, and the plunger is thus caused to the vane-arm K, and the vane-arm extends at the side of head B to near the wheel-hub T.

The vane-arm thus forms a lever havin ga lon gpurchase for operation of the brake. The hinge-pin of the casting L is provided with a coiled spring, M, that acts to retain the vane in line with the wheel-shaft.

A chain, g, connected to vane-staff K, passes over friction-rollers a to a rod, w, that extends downward through the tubular plunger G.

This is used for turning the wheel more orless inclined. to the Wind by drawing on rod w by hand to swing the vane.

When the mill is to be erected on buildings the hollow center post, R, (shown in Fig. 4,) is used. This is provided with an apertured cap-plate, b, so that the plunger and pumprod can pass through the cap and post, and the cap being covered bv the head-casting there will be no space for leakage.

With this construction solidityand durability are secured in all parts of the windmill. The mill can be set up by inexperienced persons, and there are no complicated parts liable to derangement.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a windmill,the arm 1', carryin ga brake, 0, under the pulley N, pivoted to the head B, and sustained by a collar, 8, arranged about the box I), in combination with the lever P, piv- 2 me/r37 oted on box 1), taking by one end beneath the 3. In a windrnill the casting L, pivoted to collar 8, and connected by a chain with the and extending at the side of head nearly to the vane-staff, as and for the purpose specified. wheel-hub T, as described, to forma lever hav- 2. The combination, with the head B, carrying a long purchase for the operation of the 5 ing the guide-bolt 7c, and the driver F, havinga brake.

slot, as shown, of the plunger G, extending through the upper part of said head,provided EBASTUS WILSON with a slot to receive said guide-bolt, andhzw- Witnesses: in g a crank-pin, f, projectinginto slot of driver, J 0s. A. SPRINGER,

IO as and for the purpose specified. L. N. SCHMIDT. 

